homelab-nomad/core/metrics/exporters.nomad

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job "metrics" {
datacenters = ["dc1"]
type = "system"
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group "promtail" {
network {
mode = "bridge"
port "promtail" {
to = 9080
}
}
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service {
name = "promtail"
port = "promtail"
meta {
metrics_addr = "${NOMAD_ADDR_promtail}"
nomad_dc = "${NOMAD_DC}"
nomad_node_name = "${node.unique.name}"
}
connect {
sidecar_service {
proxy {
local_service_port = 9080
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upstreams {
destination_name = "loki"
local_bind_port = 1000
}
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}
}
sidecar_task {
resources {
cpu = 50
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memory = 20
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}
}
}
check {
type = "http"
path = "/metrics"
port = "promtail"
interval = "10s"
timeout = "10s"
}
}
task "promtail" {
driver = "docker"
meta = {
"diun.sort_tags" = "semver"
"diun.watch_repo" = true
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"diun.include_tags" = "^[0-9]+\\.[0-9]+\\.[0-9]+$"
}
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config {
image = "grafana/promtail:2.7.1"
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args = ["-config.file=/etc/promtail/promtail.yml"]
ports = ["promtail"]
# Mount config
mount {
type = "bind"
target = "/etc/promtail/promtail.yml"
source = "local/promtail.yml"
}
# Bind mount host machine-id and log directories
mount {
type = "bind"
source = "/etc/machine-id"
target = "/etc/machine-id"
readonly = true
}
mount {
type = "bind"
source = "/var/log/journal/"
target = "/var/log/journal/"
readonly = true
}
mount {
type = "bind"
source = "/run/log/journal/"
target = "/run/log/journal/"
readonly = true
}
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# mount {
# type = "bind"
# source = "/var/log/audit"
# target = "/var/log/audit"
# readonly = true
# }
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}
template {
data = <<EOF
---
server:
http_listen_address: 0.0.0.0
http_listen_port: 9080
clients:
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- url: http://{{ env "NOMAD_UPSTREAM_ADDR_loki" }}/loki/api/v1/push
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scrape_configs:
- job_name: journal
journal:
json: false
max_age: 12h
path: /var/log/journal
labels:
job: systemd-journal
relabel_configs:
- source_labels: ['__journal__systemd_unit']
target_label: unit
- source_labels: ['__journal__hostname']
target_label: hostname
- source_labels: ['__journal__transport']
target_label: journal_transport
# Docker log labels
- source_labels: ['__journal_syslog_identifier']
target_label: syslog_identifier
- source_labels: ['__journal_image_name']
target_label: docker_image_name
- source_labels: ['__journal_container_name']
target_label: docker_container_name
- source_labels: ['__journal_container_id']
target_label: docker_container_id
- source_labels: ['__journal_com_docker_compose_project']
target_label: docker_compose_project
- source_labels: ['__journal_com_docker_compose_service']
target_label: docker_compose_service
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- source_labels: ['__journal_com_hashicorp_nomad_alloc_id']
target_label: nomad_alloc_id
- source_labels: ['__journal_com_hashicorp_nomad_job_id']
target_label: nomad_job_id
- source_labels: ['__journal_com_hashicorp_nomad_job_name']
target_label: nomad_job_name
- source_labels: ['__journal_com_hashicorp_nomad_node_name']
target_label: nomad_node_name
- source_labels: ['__journal_com_hashicorp_nomad_group_name']
target_label: nomad_group_name
- source_labels: ['__journal_com_hashicorp_nomad_task_name']
target_label: nomad_task_name
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EOF
destination = "local/promtail.yml"
}
resources {
cpu = 50
memory = 100
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}
}
}
}